The present application discloses a file organizer assembly including a back panel, a pair of side frames, at least one shelf and a bottom panel. The back panel comprises a top fixer. Each of the side frames comprises a top connector and at least one channel, wherein the top fixer is removably coupled to the top connectors of the pair of the side frames. The at least one shelf removably engaged to the channels. The bottom panel is coupled to the pair of the side frames. Each of the top connectors comprises a sleeve, wherein the top fixer comprises a top rod and a pair of inserts removably inserted into the sleeves. Each of the top connectors further comprises a plate coupled to the sleeve. A method for assembling the aforementioned file organizer assembly is also disclosed.